What are the types of high-platform ball valves?

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This post was last edited by GOIHI on 2016-11-19 at 17:56. What are the types of high-platform ball valves? How are ball valves classified? A detailed classification of ball valves: These valves can be roughly divided into 19 categories, including floating ball valves, fixed ball valves, metal-sealed ball valves, V-ball valves, wafer-type ball valves, insulated ball valves, line ball valves, track ball valves, top-mounted ball valves, pigging valves, high-pressure forged ball valves, three-way (four-way) ball valves, threaded ball valves, integral ball valves, low-temperature ball valves, bellows ball valves, eccentric hemispherical valves, fully welded ball valves, and special-purpose ball valves. How are ball valves classified? Detailed classification of ball valves 1. Classification by function and purpose (1) Shut-off valves: Also known as isolation valves, their role is to connect or disconnect the medium in the pipeline. Cut-off valves include gate valves, globe valves, plug valves, ball valves, butterfly valves, and diaphragm valves, among others. (2) Check valve: A check valve, also known as a one-way valve or non-return valve, serves to prevent the medium in the pipeline from flowing backward. The bottom valve at the water pump’s suction side also belongs to the category of check valves. (3) Safety valve: The function of safety valves is to prevent the pressure of the medium in pipelines or devices from exceeding specified values, thereby achieving safety protection. (4) Control valves: Control valves include regulating valves, throttle valves, and pressure-reducing valves; their function is to adjust parameters such as the pressure and flow rate of the medium. (5) Diversion valves: Diversion valves include various distribution valves and steam traps, etc., whose function is to distribute, separate, or mix the fluids in the pipelines. (6) Exhaust valve: The exhaust valve is an essential auxiliary component in pipeline systems, and it is widely used in boilers, air conditioning systems, oil and gas industries, as well as water supply and drainage pipelines. It is often installed at high points or bends, etc., to remove excess gas from the pipes, improve the efficiency of pipe usage, and reduce energy consumption. 2. Classification by nominal pressure: (1) Vacuum valves: These are valves whose operating pressure is below standard atmospheric pressure. (2) Low-pressure valve: refers to a valve with a nominal pressure PN ≤ 1.6 Mpa. (3) Medium-pressure valves: Refer to valves with a nominal pressure PN of 2.5, 4.0, and 6.4 Mpa. (4) High-pressure valve: Refers to valves with a nominal pressure PN of 10–80 Mpa. (5) Ultra-high pressure valve: refers to a valve with a nominal pressure of PN≥100 Mpa. 3. Classification by operating temperature: (1) Ultra-low temperature valves: Valves used for media with an operating temperature of up to 450℃. 4. Classification by actuation method: (1) A automatic valve is a valve that does not require external force for operation; instead, it relies on the energy of the medium itself to move the valve. Such as safety valves, pressure relief valves, steam traps, check valves, automatic control valves, etc. (2) Power-driven valve: A power-driven valve can be driven by various power sources. Electric valve: A valve that is driven by electricity. Pneumatic valve: A valve driven by compressed air. Hydraulic valve: A valve driven by the pressure of liquids such as oil. In addition, there are combinations of the above driving methods, such as pneumatic-electric valves. (3) Manual valve: A manual valve operates the valve through manual effort using a handwheel, handle, lever, or sprocket. When the torque required to open and close the valve is high, a gear or worm gear reducer can be installed between the handwheel and the valve stem. If necessary, universal joints and drive shafts can also be used for remote operation. 5. Classification by nominal diameter: (1) Valves with small diameter: Valves with a nominal diameter of DN ≤ 40 mm. (2) Medium-bore valves: Valves with a nominal bore DN of 50–300 mm. (3) Large-diameter valves: Valves with a nominal diameter of 350–1200 mm. (4) Extra-large diameter valves: Valves with a nominal diameter DN ≥ 1400 mm. 6. Classification by structural characteristics: (1) Gate valve: The closing element moves along the center of the valve seat ； (2) Plug valve: The closing element is a plunger or ball that rotates around its own central axis ； (3) Gate type: The closing element moves along the vertical center of the valve seat ； (4) Rotary valve: The closing element rotates around an axis outside the valve seat ； (5) Butterfly valve: The disc of the closing element rotates around an axis within the valve seat ； (6) Sliding valve: The closing element slides in a direction perpendicular to the channel. 7. Classification by connection method: (1) Threaded valves: The valve body has internal or external threads, which are used to connect to pipes via threading. (2) Flanged valves: The valve body is equipped with a flange for connection to pipeline flanges. (3) Welded connection valves: The valve body has welding grooves for welding to the pipeline. (4) Clamp-connected valves: The valve body has clamping jaws for connecting to pipes via clamps. (5) Socket-connected valves: Connected to pipes using a socket connection. (6) Clamp-connected valves: A connection method in which the valve and the pipes at both ends are directly clamped together using bolts. 8. Classification by valve body material: (1) Metal material valves: Their valve bodies and other components are made of metal materials. Such as cast iron valves, carbon steel valves, alloy steel valves, copper alloy valves, aluminum alloy valves, lead alloy valves, titanium alloy valves, Monel alloy valves, etc. (2) Non-metallic material valves: Their valve bodies and other components are made of non-metallic materials. Such as plastic valves, ceramic valves, enamel valves, fiberglass-reinforced plastic valves, etc. (3) Metal valve body lined valves: The outer structure of the valve is made of metal, while all the surfaces inside that come into contact with the medium are lined, such as rubber-lined valves, plastic-lined valves, ceramic-lined valves, etc. 9. Classification by valve operation direction: (1) Angular travel valves include ball valves, butterfly valves, plug valves, etc. http://www.sentevalve.com/uploadfile/201608/23/1132444949.jpg 304 stainless steel flanged high-platform ball valve http://www.sentevalve.com/uploadfile/201608/4/951488801.jpg Flanged high-platform ball valve http://www.sentevalve.com/uploadfile/201608/4/95099161.jpg DN25 anti-theft gate valve http://www.sentevalve.com/uploadfile/201608/4/948377053.jpg DN15 anti-theft gate valve http://www.sentevalve.com/uploadfile/201608/4/945566833.jpg Two-piece high-platform ball valve http://www.sentevalve.com/uploadfile/201608/4/944199585.jpg Three-piece flanged high-platform ball valve http://www.sentevalve.com/uploadfile/201608/4/94377725.jpg Three-piece ball valve. This article is provided by: Three-piece high-platform ball valve; original URL: http://www.sentevalve.com/cpzs/197.html